51466911938 has 16 divisors (see below), whose sum is σ = 83648918976. Its totient is φ = 23608227600.

The previous prime is 51466911857. The next prime is 51466912001. The reversal of 51466911938 is 83911966415.

It is a self number, because there is not a number n which added to its sum of digits gives 51466911938.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6067838 + ... + 6076313.

It is an arithmetic number, because the mean of its divisors is an integer number (5228057436).

Almost surely, 2^51466911938 is an apocalyptic number.

51466911938 is a deficient number, since it is larger than the sum of its proper divisors (32182007038).

51466911938 is a wasteful number, since it uses less digits than its factorization.

51466911938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12144329.

The product of its digits is 1399680, while the sum is 53.

The spelling of 51466911938 in words is "fifty-one billion, four hundred sixty-six million, nine hundred eleven thousand, nine hundred thirty-eight".